If the depletion of the oxygen is found to be 3 mg/ liter after incuba – McqOptions

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1.	If the depletion of the oxygen is found to be 3 mg/ liter after incubating 5 ml of sewage diluted to 250 ml for 5 days at 20° C, B.O.D of the sewage is
A.	150 mg/litre
B.	250 mg/litre
C.	350 mg/litre
D.	40 mg/llitre
Answer» B. 250 mg/litre

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